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1,333
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texts 1,332
movies 1
COLLECTION
TOPIC
NATURAL SCIENCES 90
TECHNOLOGY 50
Physics 21
Agriculture and related sciences and techniques. Forestry. Farming. Wildlife exploitation 20
Chemistry. Crystallography. Mineralogy 19
Electric machinery 19
Electrical engineering 19
SOCIAL SCIENCES 19
Industrial efficiency 18
Heating 16
Management and organization of industry, trade and communication 16
Wood 15
Compressed air 14
Mathematics 14
Petroleum 14
Practical laboratory chemistry. Preparative and experimental chemistry 13
Railroads 13
Machine design 12
Mines and mineral resources 12
Telegraph, Wireless 12
Colloids 11
Earth sciences. Geology, meteorology,etc 11
Geology, Economic 11
PHILOSOPHY. PSYCHOLOGY 11
Steel 11
Ventilation 11
Botany 10
Chemistry 10
Economics 10
Engineering 10
Factory management 10
General mechanics. Mechanics of solid and rigid bodies 10
Internal combustion engines 10
Machine-shop practice 10
Mechanical drawing 10
Strength of materials 10
Astronomy. Astrophysics. Space research.Geodesy 9
Building 9
Cost accounting 9
Irrigation 9
Lighting 9
Steam power plants 9
Structural analysis (Engineering) 9
Astronomical instruments and techniques 8
Automobiles 8
Concrete construction 8
Electric currents, Alternating 8
Hydraulics 8
Lettering 8
Roads 8
Accounting 7
Biological sciences in general 7
Business 7
Electric engineering 7
Industries, crafts and trades for finished or assembled articles 7
Machinery, Kinematics of 7
Proteins 7
Psychology 7
Airplanes 6
Geometry, Projective 6
Iron 6
Ore deposits 6
Ore-dressing 6
Plumbing 6
Projectiles 6
Pumping machinery 6
Adhesives 5
Biology 5
Building materials 5
Business management, administration. Commercial organization 5
Cyanide process 5
Economics in general 5
Electric power distribution 5
Engineering. Technology in general 5
Fundamental and general consideration of mathematics 5
General botany 5
General geology 5
Generalities about the pure sciences 5
Geometry, Descriptive 5
Machinery 5
Manufactures 5
Metallurgy 5
Petrology 5
Politics 5
Psychophysiology (physiological psychology). Mental physiology 5
Public utilities 5
Reinforced concrete 5
Rubber 5
Sewerage 5
Thermodynamics 5
Zoology 5
Accountancy 4
Advertising 4
Advertising cards 4
Ammunition 4
Architectural drawing 4
Chemistry, Technical 4
Contractors' operations 4
Copper 4
Electric power-plants 4
Electricity 4
Farm engines 4
Forms of political organization. States as political power 4
General and theoretical biology 4
General geology. Meteorology. Climatology. Historical geology. Stratigraphy. Palaeogeography 4
Generalities about the pure sciences. Mathematical sciences in the broad sense 4
Graphic statics 4
Magnetism 4
Military engineering 4
Mineralogy, Determinative 4
Personnel management 4
Retaining walls 4
Steam-engines 4
Sulphuric acid 4
THE ARTS 4
Agriculture in general 3
Banks and banking 3
Chemistry, Analytic 3
Dielectrics 3
Earthwork 3
Electric currents 3
Electric insulators and insulation 3
Electric relays 3
Electricity. Magnetism. Electromagnetism 3
Federal Reserve banks 3
Foundations 3
Fuel 3
Furnaces 3
Gas manufacture and works 3
Labor turnover 3
Lubrication and lubricants 3
Machinery. [from old catalog] 3
Marketing 3
Mechanical engineering 3
Mechanics, Applied 3
Metallography 3
Metallurgical analysis 3
Methods of the social sciences 3
Mineral industries 3
Mining engineering 3
Music 3
Natural gas 3
Overhead electric lines 3
Philosophy of mind 3
Physical nature of matter 3
Piers 3
Plant breeding 3
Plantae 3
Steam engineering 3
Steam power-plants 3
Stokers, Mechanical 3
Study skills 3
Theories and methods in social sciences 3
Timber 3
Turbines 3
United States -- Economic conditions 1918-1945 3
Water 3
Water-supply 3
Welding 3
Wharves 3
Accidents 2
Aeronautics 2
Agricultural credit 2
Analysis 2
Analytical chemistry 2
Bridges 2
Bridges -- Design and construction 2
Building materials -- Testing 2
Building, Iron and steel 2
Cells 2
City planning 2
Civil engineering 2
Coal mines and mining 2
Coal-tar products 2
Concrete 2
Cryptogams. Flowerless plants. Spore plants 2
Crystallography 2
Cytology 2
Depreciation 2
Dies (Metal-working) 2
Dredging 2
Electric furnaces 2
Electric lines 2
Electric railroads 2
Electric railroads -- United States 2
Engineering -- Estimates and costs 2
English language 2
Farm buildings 2
Functions 2
Gases, Asphyxiating and poisonous -- War use 2
Gearing. [from old catalog] 2
General 2
Graphic methods 2
Heredity 2
Home economics. Domestic science. Housekeeping 2
Hydraulic engineering 2
Industries 2
Insects 2
Insurance law 2
LANGUAGE. LINGUISTICS. LITERATURE 2
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